CN108317315B - Flaring connection positioning sleeve, connection pipe fitting and pipe fitting connection method - Google Patents
Flaring connection positioning sleeve, connection pipe fitting and pipe fitting connection method Download PDFInfo
- Publication number
- CN108317315B CN108317315B CN201810260764.2A CN201810260764A CN108317315B CN 108317315 B CN108317315 B CN 108317315B CN 201810260764 A CN201810260764 A CN 201810260764A CN 108317315 B CN108317315 B CN 108317315B
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- Prior art keywords
- sleeve
- pipe
- sleeve body
- wall
- flaring
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 230000007334 memory performance Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
- F16L13/165—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by an axially movable sleeve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The invention discloses a flaring connecting positioning sleeve, a connecting pipe fitting and a pipe fitting connecting method, the flaring connecting positioning sleeve comprises a sleeve body, the inner wall of the sleeve body is used for being matched with the outer wall of the pipe, the outer wall of the sleeve body is used for being matched with the inner wall of the memory ring, an inner stop buckle is arranged on the inner wall of the first end of the sleeve body, an anti-tripping device is arranged on the outer wall of the first end of the sleeve body, and an outer stop buckle is arranged on the outer wall of the second end of the sleeve body. The flaring connecting and positioning sleeve a connecting pipe fitting and a pipe fitting connecting method, the problem of the displacement of the memory ring during flaring connection can be solved, the quality stability of the memory ring is improved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of pipeline connection, in particular to a flaring connection positioning sleeve, a connection pipe fitting and a pipe fitting connection method.
Background
At the pipeline connection in the technical field of the preparation method, a flared self-closing connecting pipe fitting is widely used. The connecting pipe fitting consists of a pipe, a pipe joint and a memory ring, wherein the memory ring has the capability of retracting towards the original size after being expanded. When the pipe fitting is connected, the memory ring is sleeved on the connecting end of the pipe, then the expander is used for expanding the connecting end of the pipe and the memory ring, the inserting end of the pipe joint is placed into the pipe, the position is kept for 5-10 seconds, and the connection can be completed after the contraction of the connecting end of the pipe and the memory ring is completed. Generally, the memory ring must have a stop function, otherwise, when the connection end of the pipe is enlarged, the memory ring slides away from the connection end of the pipe.
Conventionally, the memory ring is made of PEX-a material. The memory capacity of the PEX-a material is better, but the processing technology of the memory ring made of the PEX-a material is to extrude a tube, then cut into a circular ring with proper length, then punch a stop structure on one end surface or remove the material from the inner hole of the circular ring to process the stop structure, and the two processing modes have poorer quality stability and higher cost.
Disclosure of Invention
Based on the above, it is necessary to provide a flared connecting positioning sleeve, a connecting pipe and a pipe connecting method, which can solve the problem of displacement of the memory ring during flared connection, improve the quality stability of the memory ring and reduce the production cost.
The technical scheme is as follows:
the utility model provides a flaring connects locating sleeve, includes the cover body, the inner wall of cover body is used for matching with the outer wall of tubular product, the outer wall of cover body is used for matching with the inner wall of memory ring, be equipped with interior locking knot on the inner wall of the first end of cover body, be equipped with anti-tripping on the outer wall of the first end of cover body, be equipped with outer locking knot on the outer wall of the second end of cover body.
The flaring connecting positioning sleeve can be used in a flaring self-closing connecting pipe fitting, when in use, the memory ring is arranged on the outer wall of the sleeve body, the sleeve body is sleeved at the connecting end of the pipe, the first end of the sleeve body is positioned at the port of the connecting end of the pipe, when in flaring connection, the connecting end of the pipe is enlarged, the connecting end can generate larger taper, the inner stop buckle is arranged at the first end of the sleeve body, the flaring connecting positioning sleeve can still be fixed at the connecting end of the pipe, the first end of the sleeve body is provided with the anti-tripping buckle, and the second end of the sleeve body is provided with the outer stop buckle, so that the memory ring can still be fixed on the sleeve body during flaring, the problem of displacement of the memory ring can be effectively solved, and the stop processing on the memory ring is not needed, the quality stability of the memory ring is improved, and the production cost is reduced.
Further, the inner wall of the sleeve body is provided with a fixing rib, and the shortest distance a between the fixing rib and the axis of the sleeve body is smaller than the maximum diameter b of the inverted tooth of the pipe joint.
Further, the fixing ribs are distributed on the inner wall of the sleeve body at intervals around the axis of the sleeve body.
Further, a drag reduction groove is arranged on the outer wall of the sleeve body at the position corresponding to the fixing rib.
Further, at least one of the inner stop catch, the outer stop catch and the anti-tripping device is of an annular bulge structure.
Further, the inner side of the second end of the sleeve body is a rounded corner structure.
Further, the flaring connecting positioning sleeve is made of PE material or plastic material.
Further, the flaring connecting and positioning sleeve is formed by injection molding.
The utility model provides a connecting tube spare, includes coupling, memory ring, tubular product and flaring connect the locating sleeve, the flaring connect the locating sleeve and be used for the cover to establish the outside of the link of tubular product, the memory ring is used for the cover to establish the outside of cover body, just the memory ring is located prevent tripping with between the outer stop knot, the coupling is used for inserting the link of tubular product.
The connecting pipe fitting comprises the flaring connecting positioning sleeve, has the technical effect of the flaring connecting positioning sleeve, can effectively solve the problem that the memory ring shifts during flaring, improves the quality stability of the memory ring, and reduces the production cost.
A pipe fitting connection method adopts the flaring connection positioning sleeve, and comprises the following steps:
the memory ring is sleeved on the outer wall of the sleeve body, so that the memory ring is positioned between the anti-tripping buckle and the outer stop buckle, and the sleeve body is sleeved on the outer wall of the connecting end of the pipe;
expanding the connecting end of the pipe to ensure that the connecting end of the pipe generates an expanded taper, and stopping an inner stopping buckle at the second end of the sleeve body to ensure that the flaring connecting positioning sleeve can still be fixed at the connecting end of the pipe, and stopping the memory ring by an outer stopping buckle at the first end of the flaring connecting positioning sleeve to ensure that the memory ring is fixed on the sleeve body during expansion;
and placing the insertion end of the pipe joint into the pipe, and completing the connection between the connection end of the pipe and the memory ring by shrinkage.
The pipe fitting connecting method can effectively solve the problem of displacement of the memory ring during flaring, improve the quality stability of the memory ring and reduce the production cost.
Drawings
FIG. 1 is a schematic view of a connecting pipe according to an embodiment of the present invention after connection;
FIG. 2 is a schematic view of a structure of a pipe before flaring at a connecting end according to an embodiment of the present invention;
FIG. 3 is a schematic view of a structure of a pipe according to an embodiment of the present invention after the connecting end of the pipe is flared;
FIG. 4 is a schematic structural view of a flaring connection positioning sleeve according to an embodiment of the present invention;
FIG. 5 is a front view of a flared binding spacer sleeve according to one embodiment of the present invention;
FIG. 6 is a side view of a flared binding spacer sleeve according to one embodiment of the present invention;
FIG. 7 is a schematic view of a flaring connection positioning sleeve according to an embodiment of the present invention mounted on a pipe joint;
fig. 8 is a schematic flow chart of a pipe connection method according to another embodiment of the invention.
Reference numerals illustrate:
100. the pipe joint comprises a pipe joint body, 110, barb teeth, 200, a memory ring, 300, a pipe, 400, a flaring connecting positioning sleeve, 410, a sleeve body, 420, an inner stop buckle, 430, an anti-tripping device, 440, an outer stop buckle, 450, fixing ribs, 460, a drag reduction groove, 470 and a rounding angle.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items. The terms "first," "second," and the like, as used herein, are used herein to distinguish between objects, but the objects are not limited by these terms.
As shown in fig. 1, 2 and 3, an embodiment provides a connecting tube, including a tube joint 100, a memory ring 200, a tube 300 and a flared connecting sleeve 400.
As shown in fig. 2, 3, and 4, in one embodiment, the flared joint locator sleeve 400 includes a sleeve body 410. The inner wall of the sleeve body 410 is used for matching with the outer wall of the pipe 300, and the outer wall of the sleeve body 410 is used for matching with the inner wall of the memory ring 200. An inner stop button 420 is provided on an inner wall of the first end of the sleeve body 410. An anti-trip 430 is provided on an outer wall of the first end of the sleeve body 410. An outer stopper 440 is provided on an outer wall of the second end of the sleeve body 410.
The flaring connecting positioning sleeve 400 can be used in a flaring self-closing connecting pipe fitting, as shown in fig. 2, when in use, the memory ring 200 is arranged on the outer wall of the sleeve body 410, the sleeve body 410 is sleeved at the connecting end of the pipe 300, the first end of the sleeve body 410 is positioned at the port of the connecting end of the pipe 300, as shown in fig. 3, when in flaring connection, the connecting end of the pipe 300 is enlarged, a larger taper is generated at the connecting end, as the first end of the sleeve body 410 is provided with the inner stop buckle 420, the inner stop buckle 420 enables the flaring connecting positioning sleeve 400 to be still fixed at the connecting end of the pipe 300, the first end of the sleeve body 410 is provided with the anti-tripping buckle 440, and the memory ring 200 can still be fixed on the sleeve body 410 when in expansion, thereby effectively solving the problem that the memory ring 200 is shifted when in flaring, and the memory ring 200 can still adopt the PEX-a material with better memory function, ensuring the memory performance without special stop processing on the memory ring 200, improving the quality stability of the memory ring 200 and reducing the production cost.
In this embodiment, at least one of the inner stop buckle 420, the outer stop buckle 440 and the anti-releasing buckle 430 is an annular protrusion structure. The annular protrusion structure is adopted, that is, the inner stop buckle 420, the outer stop buckle 440 and/or the anti-tripping buckle 430 are all arranged around the circumference direction of the sleeve body 410, so that the stop can be performed in the whole circumference direction, the stop effect is good, and the flaring connection positioning sleeve 400 in the embodiment can be integrally formed during manufacturing, and the manufacturing is convenient. Optionally, the inner stop buckle 420, the outer stop buckle 440 and the anti-tripping buckle 430 are all in annular protruding structures, and the flaring connecting positioning sleeve 400 of the embodiment has good stop effect on the pipe 300 and the memory ring 200, good anti-tripping effect on the memory ring 200, simple structure and convenient manufacture.
In this embodiment, as shown in fig. 4 and 5, the inner wall of the sleeve body 410 is provided with a fixing rib 450, and as shown in fig. 6 and 2, the shortest distance a between the fixing rib 450 and the axis of the sleeve body 410 is smaller than the maximum diameter b of the barb teeth 110 of the pipe joint 100. Furthermore, as shown in fig. 7, the flared connecting and positioning sleeve 400 of the present embodiment may be assembled on the pipe joint 100 before use, and the fixing rib 450 is in interference fit with the inverted tooth 110 of the pipe joint 100, so that the flared connecting and positioning sleeve 400 is fixed on the pipe joint 100 before use, and further plays a role in protecting the pipe joint 100 during transportation. In addition, the memory ring 200 may be mounted on the flared connecting and positioning sleeve 400 such that the flared connecting and positioning sleeve 400 and the memory ring 200 are fixed to the pipe joint 100 together before use, effectively protecting the pipe joint 100 during transportation.
In this embodiment, the sleeve body 410 is cylindrical and matches the shape of the conventional pipe 300. Optionally, the fixing ribs 450 are a plurality of, and the plurality of fixing ribs 450 are distributed on the inner wall of the sleeve body 410 at intervals around the axis of the sleeve body 410. In this way, the flared connecting sleeve 400 can be reliably secured to the pipe joint 100. Optionally, the plurality of fixing ribs 450 are uniformly spaced around the axis of the sleeve body 410 on the inner wall of the sleeve body 410, so that the fixing effect is good, the manufacturing is convenient, and the structure is attractive.
Further, as shown in fig. 4 and 5, a drag reduction groove 460 is provided on the outer wall of the sleeve body 410 at a position corresponding to the fixing rib 450. With the above structure, since the sleeve body 410 has a thin wall thickness at the drag reduction groove 460, and thus the sleeve body 410 has a certain deformation space, when the pipe 300 is inserted into the inner hole of the sleeve body 410 of the flaring connecting positioning sleeve 400, the fixing ribs 450 on the inner hole wall do not generate larger resistance to the pipe 300. Specifically, when the number of the fixing ribs 450 is plural, the number of the drag reduction grooves 460 is the same as the number of the fixing ribs 450, and the positions are respectively set in one-to-one correspondence.
In this embodiment, as shown in fig. 5 and 2, the inner side of the second end of the sleeve body 410 is a rounded corner 470 structure, which facilitates the insertion of the pipe 300 into the sleeve body 410.
Optionally, the flared connecting positioning sleeve 400 is made of PE material or plastic material with better toughness, and has good material characteristics and is convenient to manufacture. The flared connecting sleeve 400 is injection molded. Furthermore, tens of the materials can be molded in one mold during manufacturing, so that the production cost is reduced, and the production efficiency is improved.
As shown in fig. 1, 2 and 3, the flared connecting positioning sleeve 400 is used for being sleeved on the outer side of the connecting end of the pipe 300. The memory ring 200 is used for being sleeved on the outer side of the sleeve body 410, and the memory ring 200 is positioned between the anti-tripping device 430 and the outer stop buckle 440. The pipe joint 100 is used for inserting the connection end of the pipe 300. The connecting pipe fitting comprises the flaring connecting positioning sleeve 400, has the technical effect of the flaring connecting positioning sleeve 400, can effectively solve the problem that the memory ring 200 shifts during flaring, improves the quality stability of the memory ring 200, and reduces the production cost. In this embodiment, the pipe joint 100 has an insertion end, and the insertion end of the pipe joint 100 has a barb tooth 110 thereon.
As shown in fig. 8, another embodiment provides a pipe connection method, which adopts the flaring connection positioning sleeve 400, comprising the following steps:
s1: as shown in fig. 2, the memory ring 200 is sleeved on the outer wall of the sleeve body 410, so that the memory ring 200 is positioned between the anti-release device 430 and the outer stop buckle 440, and the sleeve body 410 is sleeved on the outer wall of the connecting end of the pipe 300;
s2: as shown in fig. 3, expanding the connection end of the pipe 300 causes the connection end of the pipe 300 to have an expanded taper, and the inner stop buckle 420 at the second end of the sleeve body 410 stops, so that the flared connection positioning sleeve 400 can still be fixed at the connection end of the pipe 300, and the outer stop buckle 440 at the first end of the flared connection positioning sleeve 400 stops the memory ring 200, so that the memory ring 200 is fixed on the sleeve body 410 when expanding;
s3: as shown in fig. 1, the insertion end of the pipe joint 100 is placed inside the pipe 300, and the connection end of the pipe 300 and the memory ring 200 are contracted to complete the connection.
The pipe fitting connection method can effectively solve the problem of displacement of the memory ring 200 during flaring, improves the quality stability of the memory ring 200 and reduces the production cost.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The flaring connecting positioning sleeve is characterized by comprising a sleeve body, wherein the inner wall of the sleeve body is used for being matched with the outer wall of a pipe, the outer wall of the sleeve body is used for being matched with the inner wall of a memory ring, an inner stop buckle is arranged on the inner wall of a first end of the sleeve body, an anti-tripping device is arranged on the outer wall of the first end of the sleeve body, and an outer stop buckle is arranged on the outer wall of a second end of the sleeve body; the anti-tripping and the outer stop buckle are used for limiting the memory ring between, and at least one of the inner stop buckle, the outer stop buckle and the anti-tripping is of an annular bulge structure; and the flaring connecting and positioning sleeve is integrally formed during manufacturing.
2. The flaring connection positioning sleeve according to claim 1, wherein a fixing rib is arranged on the inner wall of the sleeve body, and the shortest distance a between the fixing rib and the axis of the sleeve body is smaller than the maximum diameter b of the inverted tooth of the pipe joint.
3. The flaring connection positioning sleeve of claim 2, wherein the plurality of securement ribs are spaced apart on the inner wall of the sleeve body about the axis of the sleeve body.
4. The flaring connection positioning sleeve of claim 2, wherein a drag reduction groove is provided on an outer wall of said sleeve body at a location corresponding to said securing rib.
5. The flare connection location sleeve of any one of claims 1-4, wherein the inner side of the second end of the sleeve body is rounded.
6. The flare attachment location sleeve of any one of claims 1-4, wherein the flare attachment location sleeve is a plastic material.
7. The flare connection location sleeve of claim 6, wherein the flare connection location sleeve is a PE material.
8. The flare connection location sleeve of claim 6, wherein the flare connection location sleeve is injection molded.
9. The connecting pipe fitting is characterized by comprising a pipe joint, a memory ring, a pipe and the flaring connecting positioning sleeve according to any one of claims 1-8, wherein the flaring connecting positioning sleeve is used for being sleeved on the outer side of a connecting end of the pipe, the memory ring is used for being sleeved on the outer side of the sleeve body, the memory ring is positioned between the anti-tripping buckle and the outer stop buckle, and the pipe joint is used for being inserted into the connecting end of the pipe.
10. A method of connecting pipe elements, characterized in that a flared joint spacer according to any one of claims 1-8 is used, comprising the steps of:
the memory ring is sleeved on the outer wall of the sleeve body, so that the memory ring is positioned between the anti-tripping buckle and the outer stop buckle, and the sleeve body is sleeved on the outer wall of the connecting end of the pipe;
expanding the connecting end of the pipe to ensure that the connecting end of the pipe generates an expanded taper, and stopping an inner stopping buckle at the second end of the sleeve body to ensure that the flaring connecting positioning sleeve can still be fixed at the connecting end of the pipe, and stopping the memory ring by an outer stopping buckle at the first end of the flaring connecting positioning sleeve to ensure that the memory ring is fixed on the sleeve body during expansion;
and placing the insertion end of the pipe joint into the pipe, and completing the connection between the connection end of the pipe and the memory ring by shrinkage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810260764.2A CN108317315B (en) | 2018-03-27 | 2018-03-27 | Flaring connection positioning sleeve, connection pipe fitting and pipe fitting connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810260764.2A CN108317315B (en) | 2018-03-27 | 2018-03-27 | Flaring connection positioning sleeve, connection pipe fitting and pipe fitting connection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108317315A CN108317315A (en) | 2018-07-24 |
| CN108317315B true CN108317315B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810260764.2A Active CN108317315B (en) | 2018-03-27 | 2018-03-27 | Flaring connection positioning sleeve, connection pipe fitting and pipe fitting connection method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108317315B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5228721A (en) * | 1990-06-25 | 1993-07-20 | James Hardie Plumbing & Pipelines Pty. Limited | Pipe fitting |
| JP2004324677A (en) * | 2003-04-22 | 2004-11-18 | Awaji Sangyo Kk | Method and structure for joining metallic member |
| CN104121434A (en) * | 2013-04-25 | 2014-10-29 | 和正丰科技股份有限公司 | Pipe joint for preventing pipe fitting and pipe joint from loosening |
| CN107401647A (en) * | 2017-08-15 | 2017-11-28 | 日丰企业（佛山）有限公司 | Pipe fitting connecting method and attachment structure |
| CN107489831A (en) * | 2017-06-23 | 2017-12-19 | 成都飞机工业（集团）有限责任公司 | A kind of memorial alloy pipe joint |
| CN208169739U (en) * | 2018-03-27 | 2018-11-30 | 日丰企业（佛山）有限公司 | It is flared connecting positioning sleeve and connecting pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11543065B2 (en) * | 2016-09-02 | 2023-01-03 | Zurn Industries, Llc | Extruded cold-expansion compression collar |
-
2018
- 2018-03-27 CN CN201810260764.2A patent/CN108317315B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5228721A (en) * | 1990-06-25 | 1993-07-20 | James Hardie Plumbing & Pipelines Pty. Limited | Pipe fitting |
| JP2004324677A (en) * | 2003-04-22 | 2004-11-18 | Awaji Sangyo Kk | Method and structure for joining metallic member |
| CN104121434A (en) * | 2013-04-25 | 2014-10-29 | 和正丰科技股份有限公司 | Pipe joint for preventing pipe fitting and pipe joint from loosening |
| CN107489831A (en) * | 2017-06-23 | 2017-12-19 | 成都飞机工业（集团）有限责任公司 | A kind of memorial alloy pipe joint |
| CN107401647A (en) * | 2017-08-15 | 2017-11-28 | 日丰企业（佛山）有限公司 | Pipe fitting connecting method and attachment structure |
| CN208169739U (en) * | 2018-03-27 | 2018-11-30 | 日丰企业（佛山）有限公司 | It is flared connecting positioning sleeve and connecting pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108317315A (en) | 2018-07-24 |
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